These derivatives are readily obtained by alkylation of 2 - mercaptopyridine and alkyl halides under alkaline conditions.这些衍生物可以容易地在碱性条件下通过 2- 巯基吡啶和卤代烷的烷基化而得到.The different contents of various alkylation products were ob...
The Octane Number is retained owing to HZSM 5 � � s excellent ability of aromatization, isomerization and alkylation.HZSM-5沸石对汽油的降烯烃作用得益于其优异的芳构化 、 异构化和烷基化性能.These derivatives are readily obtained by alkylation of 2 - mer...
腓特烈大帝是许多艺术家的赞助人。Frederick the Great was the patron of many artists.圣腓力和圣雅各SS Philip and James路德曾抨击腓特烈保存在维藤贝格的圣物.Luther had already criticized the relics which Frederick kept at Wittenberg....
Plaudits go to the entire defence with Boulahrouz again impressing.食人族博拉鲁兹的防守堪称滴水不漏,成为本场比赛一大看点.Landscapes, grand and impressing, Bring the beauty with all its charm.江山风物, 始备大观;一唱一叹, 尽成大气.They always think of impressing p...
1941年，火车本可以由蒸汽机车拉动。In 1941, the train would have been pulled by a steam engine.机车建筑有限公司是该托拉斯的全资子公司。The Locomotive Construction Company Ltd is a wholly-owned subsidiary of the Trust.我将坐在机车后面的第三节车厢内.I'll be sitting in...